import HmacSHA1 from 'hmacsha1'
import { dateFormat } from 'vux'


// 生成uuid 36位
function uuid() {
  var s = [];
  var hexDigits = "0123456789ABCDEF";
  for (var i = 0; i < 36; i++) {
      s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
  }
  s[14] = "4";  // bits 12-15 of the time_hi_and_version field to 0010
  s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1);  // bits 6-7 of the clock_seq_hi_and_reserved to 01
  s[8] = s[13] = s[18] = s[23] = "-";

  var uuid = s.join("");
  return uuid;
}

function query() {
  //使用算法
  var timestamp = dateFormat(new Date(), 'YYYY-MM-DDHH:mm:ss').replace(/-/g, '').replace(/:/g, '')
  var nonce = uuid()
  var value = nonce + timestamp
  var key = "0CA7E941169DFA698D4548853EE0A199"
  var signature = HmacSHA1(key, value); //第一个参数为公共秘钥，第二个参数为加密字符串
  return `?r=${nonce}&t=${timestamp}&s=${signature}`
}

export default query

